广西平果县岩溶山地不同植物群落的土壤酶活性

发布时间：2018-03-03 18:23

本文选题：土壤酶　切入点：喀斯特　出处：《水土保持研究》2017年03期 　论文类型：期刊论文

【摘要】：为探讨平果县岩溶山地典型植物群落的土壤酶活性特征,基于调查取样与试验分析,采用相关分析、多重比较以及主成分分析方法,研究了不同植物群落间土壤酶活性的差异,分析了土壤酶活性与土壤化学性质的关系。结果表明:(1)土壤过氧化氢酶、脲酶及蔗糖酶活性的群落间差异达显著水平,显示不同植物群落对土壤酶活性产生一定影响;(2)土壤pH值与过氧化氢酶、脲酶间呈极显著正相关(p0.01),与碱性磷酸酶间呈显著负相关(p0.05);(3)4个酶活性与代表土壤肥力的土壤有机质、全氮、全磷、全钾、碱解氮及速效钾之间具有较强的相关性,但速效磷与4个土壤酶之间的相关性均未达显著水平(p0.05);(4)过氧化氢酶、脲酶及碱性磷酸酶能敏感反映土壤质量的变化,可作为本区域土壤质量评价的指标。
[Abstract]:In order to study the soil enzyme activity characteristics of typical plant communities in karst mountainous areas of Pingguo County, the differences of soil enzyme activities among different plant communities were studied by means of correlation analysis, multiple comparison and principal component analysis based on investigation and experimental analysis. The relationship between soil enzyme activity and soil chemical properties was analyzed. The results showed that the difference of soil catalase, urease and sucrase activities was significant. The results showed that different plant communities had a certain effect on soil enzyme activity. (2) soil pH and catalase were significantly positive correlation between urease and alkaline phosphatase, and significant negative correlation was found between soil pH value and soil catalase, and there was a significant negative correlation between soil enzyme activity and soil organic matter representing soil fertility. There was a strong correlation between total nitrogen, total phosphorus, total potassium, alkali-hydrolyzed nitrogen and available potassium, but the correlation between available phosphorus and four soil enzymes was not significant. Urease and alkaline phosphatase can sensitively reflect the change of soil quality and can be used as indicators of soil quality evaluation in this region.
【作者单位】：广西林业科学研究院;中南林业科技大学;
【基金】：广西优良用材林资源培育重点实验室开放课题(14B0101) 广西林业科技项目(桂林科字[2014]02号)
【分类号】：S154.2

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